A human-machine interface comprising: —a magnetic rocker rotatably movable between a rest position wherein an implement is maintained in a neutral position and a tilted position wherein the implement is in a reclined position, —a magnetic assembly, attached to a frame, capable of cooperating with the magnetic rocker to generate a magnetic return force that constantly urges the magnetic rocker towards its rest position, —a sliding connection comprising a flange and a slide, and —the implement comprises one of the slides, and the flange and the magnetic rocker comprise the other of the slide and the flange such that the sliding connection transforms the movement of the implement towards the reclined position by moving the magnetic rocker towards its tilted position and vice versa.

An input/output operation device (165) includes: an operation part (850); a movable unit (180) including a loosely fitted space inside, a main body supporting the operation part (802) and including a first loosely fitted surface (820) exposed in the loosely fitted space, and at least one drive magnet (401, 402); a fixed unit including a second loosely fitted surface (821) in point- or line-contact with the first loosely fitted surface of the movable unit, a holder (811) supporting the movable unit for free rotation, a base (811) including a space for accommodating at least a part of the movable unit and supporting the holder, and at least one drive coil (301, 302); a drive part to rotate the movable unit with respect to the fixed unit; and a detector to detect a position of the operation part in the fixed unit. One of the first and second loosely fitted surfaces includes an inner peripheral surface formed into a recessed portion, and another one of the first and second loosely fitted surfaces includes at least one protruded spherical surface.

A joystick for an electrically-powered wheelchair includes a shaft pivotally mounted in a base and configured to control a movement of the electrically-powered wheelchair; a reset sleeve positioned over a lower portion of the shaft proximate the base; a compression spring positioned over the shaft with one end of the compression spring compressed against or fixed to an upper portion of the shaft and an opposing end of the compression spring compressed against the reset sleeve; and a flexible clip positioned over the shaft at the opposing end of the compression spring and between the compression spring and the reset sleeve, the flexible clip being removably positioned on the shaft so as to compress the compression spring between the flexible clip and a point at which the compression spring is compressed against or fixed to the upper portion of the shaft.

A joystick includes a casing, a stick body and an optical sensor. The casing has a hole. The stick body is movably disposed on the casing via the hole. The stick body includes a pressing portion, an indication portion and an identification pattern. The indication portion is connected to the pressing portion and inserts into the hole. A sunken structure is formed on a bottom of the indication portion. The identification pattern is disposed on an inner surface of the sunken structure. The optical sensor is disposed inside the casing and faces the sunken structure, and adapted to analyze a movement of the identification pattern to identify a control status of the stick body.

A hand controller that includes a control member mounted on a hand held base for commanding a remote vehicle or movement of a virtual object within a virtual environment includes an input device mounted for generating tilt commands for a sensor mounted on the remote vehicle or the virtual object, the input device being located on a front of the base and oriented to be displaced up and down to tilt the sensor or the virtual point of view when the base is held during operation.

Disclosed is a multi-directional input device, including a pressing switch. Each of two opposite side surfaces of the pressing switch is provided with a first protrusion. The base includes two base side surfaces respectively opposite to the two opposite side surfaces of the pressing switch. Each of the two opposite base side surfaces is provided with a second protrusion respectively, and the second protrusion is engaged with the first protrusion to fix the pressing switch.

Disclosed are a multi-directional input device and a game machine. The multi-directional input device includes a first rocker arm and a second rocker arm, the first rocker arm and the second rocker arm are distributed in up-down direction, each of the first rocker arm and the second rocker arm includes a C-shaped part, a rotating shaft part is provided on opposite ends of the C-shaped part, the rotating shaft part is fixed by the cover, and a rotating axis is defined at both ends of the rotating shaft part; the first rocker arm and the second rocker arm rotate relative to the cover through their respective rotating shaft part; the operating part is penetrated through the C-shaped part, and the C-shaped part defines an elongated hole guiding the operating part to pivot.

Disclosed are a multi-directional input device and a game machine. The operating part includes a hemispherical upper hemisphere at a lower end. The upper hemisphere includes a hemispherical plane part at a lower part. Diameters of the hemispherical plane part and the upper hemisphere are the same. The diameter of the upper hemisphere is greater than that of the operating part. An upper support is fixed to the base and defines a hemispherical hole and hole wall of which is abutted against the upper hemisphere. The upper support further defines a through hole above the hemispherical hole, and the operating part is penetrated through the through hole. A diameter of the through hole is greater than that of the operating part. The upper support includes an upper support plane part below the hemispherical hole. A diameter of the upper support plane part is greater than that of the hemispherical hole.

A joystick comprises an articulation comprising bearing faces that are shaped to permit, via shape-shape interaction when they rub against each other, a rotational movement of a handle. A first set of springs exerts, on the handle, a first vertical force that pushes the bearing faces against each other. A second set of springs exerts, on the handle, a second vertical force in the opposite direction to the first vertical force and the amplitude of which is between 0.9|F.sub.1| and 1.1|F.sub.1|, wherein |F.sub.1| is the amplitude of the first vertical force. The first and second sets of springs are able, in the absence of external stress on the handle, to maintain a non-zero clearance between all the bearing faces of the articulation.

In embodiments, a work vehicle magnetorheological fluid (MRF) joystick system includes a joystick device, an MRF joystick resistance mechanism, and a controller architecture. The joystick device includes, in turn, a base housing, a joystick movably mounted to the base housing, and a joystick bias mechanism coupled to the joystick and exerting a centering force urging the joystick to return to the centered position when moved therefrom. The controller architecture is operable in a modified centering mode in which the controller architecture: (i) determines when the joystick begins return toward the centered position due to the centering force applied by the joystick bias mechanism; and (ii) when so determining, commands the MRF joystick resistance mechanism to modify a rate at which the joystick returns to the centered position by varying the MRF resistance force applied to the joystick.